How to show dot graph in specific range

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Phudit Kanittasut
Phudit Kanittasut 2021-3-21
评论： Star Strider 2021-3-21
How can I show the dot that occour above 1

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Star Strider
Star Strider 2021-3-21
I am not certain what you want.
Adapt this to your data:
x = linspace(0, 7200, 250); % Create ‘x’
y = rand(size(x))*4.5E+4; % Create ‘y’
figure
plot(x, y, 'r.')
hold on
Lv = y>1E+4; % Set Threshold At 1E+4
plot(x(Lv), y(Lv), '.b')
hold off
legend('All Data', 'Data Above Threshold')
.
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Star Strider
Star Strider 2021-3-21
All the ‘pks’ values are greater than 1, and range from 102 to 45448:
pure_liver = readmatrix('Pure Liver Spectra.csv');
[pks,locs] = findpeaks(pure_liver(:,2));
x = 1:size(pure_liver,1);
[pks_min,pks_max] = bounds(pks) % Minimum & Maximum Values Of ‘pks’
figure
Lv = pure_liver(locs,2)>1E+4; % Set Threshold = 1E+4
% Lv = pure_liver(locs,2)>1; % Set Threshold = 1
plot(x(locs(Lv)), pure_liver(locs(Lv),2), '.r')
grid
title('Pure Liver peak');
Note that what appears to be ‘1’ on the plot is actually . Choose the ‘Lv’ assignment that does what you want.

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